Pneumatic tire



E. W. LEE.

PNEUMATIC TIRE.

APPLICATION HLED NOV. 30, 1920.

Patented Oct. 11, 1921.

WWW/[4 place'within the casing es is obvious, such looking action occurring as a result of forcing the triangular portion of the ribs 1& and 15 into the Channels 18 and 19 respectively, and the tongue 20' into the pocket 16,' until the expensive action of the rubber results in a snug interfit of seid parts. It will be` noted in this connection that the angular disposition of the walls OI" the pocket land tongue 20 facilitate the operation of lockingly engaging the tube with the casing 'by producing a wedging action tending to force the ribs into the channels and the overhenging protubersnces iof the ,casing into the undercut portions of the tube.

Having thus described my nvention, what I claim asnew is V I l. In e` pneumatic tire, the combinetion with t cssing provided 'in its inner periphery with e pair of annular Channels and an ennular v tongue separetng sa d channels, of an inner tube provided upon its outer peripherywith a pair of' annular ribs and an annular pocket separeting' said -ribs, seid ribs being adapted tobe received by seid 'Channels and seid tongue being adapted to be received by 'seid pocket, whereby the casing and inner tube are locked together in predetermined relation.

2. In a, pneunetc tire, the combination with a casing provided in its ,inner pe- ,riphery with annular channels and ;m annular tongue, of an inner tube provided.

upon its outer periphery with annular ribs and en annular pocket, said ribs and said tongue being adspted to be received by, said Channels and saidpocket, respectively, and the walls of said pocket and said tongue being relatively angularly disposed to facilitete engagement of said ribs withsaid Channels. r p

3. In a pneumstic t1re' the combination 'of e casing provided upon its inner nperiphery with an annular tongue, and a-n inner tube provided in 'the outer periphery p with an annular channel edapted to receive said tongue, whereby the casing and tube may be locked together in predetermined relation.

l. In epneumatic tire, an inner tube in cluding e cushion cerried by and embrec ing its base portion, said cushion being of substantially crescent shape in cross section and merging into the tube smoothly i and in unbroken curves, a casing adapted to' re-` p ceive said tube,` and means between' seid casing and tube including a tongue and re cess edapted to reletively interlock to main tain the tubeand cit-sing in predetermined relative relation. i c v u In testimony whereof hereunto afiiX my signature.

' EDWARD 5 

